[PATCH 1/5] libmm score API

[Sebastian Huber]

On 2013-08-26 02:14, Hesham AL-Matary wrote:
> +/**
> + * @brief _Memory_management_Region Flags defs
> + */
> +#define RTEMS_MM_REGION_NO_PROTECTION           0x0
> +#define RTEMS_MM_REGION_PROTECTION_READ_ONLY    0x1
> +#define RTEMS_MM_REGION_PROTECTION_WRITE        0x2
> +#define RTEMS_MM_REGION_NO_ACCESS               0x3
> +//#define RTEMS_MM_REGION_PROTECTION_EXEC   0x4

I prefer to actually have flags here and not a single integer value.

So I would use this:

#define RTEMS_MM_REGION_BIT_READ 0
#define RTEMS_MM_REGION_BIT_WRITE 1
#define RTEMS_MM_REGION_BIT_EXECUTE 2
#define RTEMS_MM_REGION_BIT_CACHE 3
#define RTEMS_MM_REGION_BIT_DEVICE 4
#define RTEMS_MM_REGION_BIT_SHARED 5

#define RTEMS_MM_REGION_READ (1U << RTEMS_MM_REGION_BIT_WRITE)
etc.

This can be used to get architecture specific values easily:

((flags >> RTEMS_MM_REGION_BIT_READ) & 0x1U) << ARCH_READ_SHIFT

-- 
Sebastian Huber, embedded brains GmbH

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